Marshall Slurry vacuum tanker service schedule

1. Remove the dipstick on top of the pump and fill the oil to the top. The dipstick is not marked.
2. Start the pump at low revs and watch the drop in the oiler. Set it to one drop every two seconds at idle.
3. Check the oiler again as soon as the pump is working hard.

Tools: Funnel, Clean oil can, Rag

1. Look at the sight glass on the side of the front gearbox with the tanker standing level.
2. Top up to the top of the glass if low. Look for milky or dirty oil, which means water or slurry has got in.
3. Fix any leak before the next job.

Tools: Funnel, Rag

1. Put the pump in the pressure position and hold a container of diesel up to the pump exhaust so it is sucked through.
2. Keep the pump turning about 30 seconds, then change from pressure to vacuum and keep it turning another 30 seconds. This also coats the top shut-off valve.
3. Catch the dirty diesel from the exhaust and dispose of it properly. Do not stop the pump until the diesel has cleared.

Tools: Container for the diesel, Container to catch dirty diesel at the exhaust

1. Tighten the wheel nuts to the torque for the stud size.
2. Check the tandem U-bolt torque and the bolt-on hitch bolts.
3. Check the tyre pressures against the chart in the Marshall manual.

Tools: Torque wrench, Wheel brace

1. Grease the hubs and bearings and check for side movement on the wheels.
2. Grease the tandem springs or oscillating rocker if fitted.
3. Check the brake rams extend and return freely.

Tools: Grease gun

1. Run the pump on pressure and read the gauge.
2. If it exceeds 1 bar, slacken the lock nut on the valve body and turn the valve anticlockwise to lower it.
3. Retighten the lock nut.

Tools: Spanner, Pressure gauge on the tanker

1. Look at the top shut-off valve for damage and corrosion.
2. Check the slurry trap valve moves freely and nothing blocks it.
3. Clean the hydraulic 6 inch valve.
4. If the gate valve activator does not close properly, re-tension its spring. If it does not open fully, slacken the spring, remove the dome and activator, clean out the dome, refit and re-tension.

Tools: Allen keys, Spanners

1. Have the pump stripped by a pump specialist if suction falls or it is noisy.
2. Quote the part numbers above for the KD-8000.

Tools: Spanners, Pump workshop

1. Check the hitch for wear.
2. Clean the lights and spray them with oil if the tanker will stand.